Of course, bankers were always interested in making money. But when bankers had clients, they bore some responsibility for the clients' welfare.
Carried interest... you're making money on somebody else's capital. It's not on your own. If that's not income, I don't know what is.
Some people find an interest in making money, and though they appear to be slaving, many actually enjoy every minute of their work.
My grandchildren will be making money from the stories I write and sell as eBooks because they will continue to be making money.